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Also available:
World English Dictionary
Dictionnaire Français
biplane
bi·plane
[
b plàyn
]
(
plural
bi·planes
)
noun
Definition:
airplane with two sets of wings:
an airplane with two sets of wings, one above the other, of a type built and flown mainly in the early part of the 20th century
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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